Thanks for reminding me, that to start a polishing session, it must begin with a good hot pressing first. I also do a cold press after a 15 minutes polishing, for 10 minutes or bit more.

Just updated the progress:

inside focal:

outside focal:

The edge is now more polished

But the turned down edge still remains

The centre region is now closer to sphere shape, and seems to be smoother.

Found that this pitch is better suited in lower temperature, around 20 deg C. As now is summer, in the 30+ degrees room temperature, need to have air conditioning on. Otherwise the edge region is very hard to get polished out